Effects of Cadmium and Cadmium Chitosan Mixture on Some Blood Parameters of Oreochromis niloticus

Çiftçi, Nuray | Karayakar, Fahri | Ay, Özcan | Karaytuğ, Sahire | Cicik, Bedii

Effects of 1 mgL-1 cadmium (Cd) and 1 mgL-1 Cd-10 mgL-1 chitosan(CT) mixture on hematocrit levels, erythrocyte numbers and on erythrocyte and erythrocyte nucleus areas were determined after exposing the animals to Cd and Cd-CT mixture over 7, 15 and 30 days. Microhematocrit and microscopic methods were used in determining the above blood parameters. No mortality was observed during the experiments. Hematocrit levels and erythrocyte numbers decreased whereas erythrocyte and erythrocyte nucleus areas increased in fish exposed to Cd alone compared with the control. No difference was observed, however, in the parameters studied in Cd-CT exposed fish compared with the control, except the erythrocyte nucleus area (P